diff --git a/lib/safe-pg-migrations/plugins/statement_insurer.rb b/lib/safe-pg-migrations/plugins/statement_insurer.rb
index d533b28..2fda65e 100644
--- a/lib/safe-pg-migrations/plugins/statement_insurer.rb
+++ b/lib/safe-pg-migrations/plugins/statement_insurer.rb
@@ -54,11 +54,7 @@ def create_table(table_name, **options)
     end
 
     def add_index(table_name, column_name, **options)
-      if options[:algorithm] == :default
-        options.delete :algorithm
-      else
-        options[:algorithm] = :concurrently
-      end
+      options[:algorithm] = :concurrently unless options.key?(:algorithm)
 
       Helpers::Logger.say_method_call(:add_index, table_name, column_name, **options)
       without_timeout { super(table_name, column_name, **options) }